WASHINGTON — Big business and labor have struck a deal on a new low-skilled worker program, removing the biggest hurdle to completion of sweeping immigration legislation allowing 11 million illegal immigrants eventual U.S. citizenship, labor and Senate officials said Saturday.

The agreement was reached in a phone call late Friday night with AFL-CIO President Richard Trumka, U.S. Chamber of Commerce head Tom Donohue, and Democratic Sen. Chuck Schumer of New York, who's been mediating the dispute.